This paper introduces the application of three filter methods,namely 2nd order Bessel filter,float-ing mean value filter and 1st order low pass filter,in the measurement of engine exhaust gas opacity.The meas-ured data of exhaust gas opacity of a certain engine model are processed by these three filter methods,and their curve characteristics under different filter parameters are compared and analyzed.The effects of these filter meth-ods on the improvement of engine exhaust smoke performance are described.
关键词
排气消光度测量/二阶贝赛尔滤波/浮动平均值滤波/一阶低通滤波
Key words
Exhaust gas opacity measurement/2nd order Bessel filter/Floating mean value filter/1st order low pass filter
维普
万方数据